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Problem 3: NB The uniform 20-kg ladder shown rests against the Smooth wall at B, and the end A rests on the rough horizontal B

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Problem 3: NB The uniform 20-kg ladder shown rests against the Smooth wall at B, and the end A rests on the rough horizontal B plane for which the coefficient of static friction is / = 0.6. Determine the angle of inclination @ of the ladder if the ladder 4 m is on the verge of slipping. (16%) W=m.g FBD: Solution 1: FF = /s NA NA

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